哈氏合金C276在溴胶混合液中的耐蚀性

发布时间：2018-06-25 04:26

本文选题：C-合金 + 液溴　；参考：《表面技术》2017年09期

【摘要】：目的研究哈氏合金C-276在溴胶溶液中的耐蚀性能,分析哈氏合金C-276在溴胶溶液中的腐蚀及失效机理。方法采用挂片试验方法,模拟溴化丁基橡胶生产过程中溴胶混合釜的腐蚀环境,研究温度、液溴含量、水含量、转速等环境因素影响哈氏合金C-276的腐蚀规律,利用SEM、XRD等现代分析技术,对腐蚀产物形貌、成分进行分析。结果哈氏合金C-276在含溴腐蚀溶液中的主要腐蚀产物为Ni Br2、Fe Br2、Mo Br2、Cr Br3等,腐蚀速率随温度、水含量、液溴含量以及转速的增加而增大。温度、水、液溴以及转速等因素均对腐蚀的发生起到了重要作用,腐蚀类型以全面腐蚀为主,伴随晶间腐蚀。结论溴胶混合液腐蚀环境下,哈氏合金C-276发生了严重的电化学腐蚀,提高温度、液溴含量、水含量、转速均会明显增加哈氏合金C-276的腐蚀速率。哈氏合金C-276不能作为溴化丁基橡胶生产设备中溴胶混合器的主材质。
[Abstract]:Aim to study the corrosion resistance of Halogen alloy C-276 in bromine solution, and to analyze the corrosion and failure mechanism of C-276 alloy in bromine solution. Methods the corrosion environment of brominated rubber mixed kettle was simulated by the method of hanging sheet test, and the corrosion law of Halogen alloy C-276 was studied by environmental factors such as temperature, bromine content, water content, rotational speed and other environmental factors, such as temperature, liquid bromine content, water content, rotational speed and so on. The morphology and composition of corrosion products were analyzed by means of SEM XRD and other modern analytical techniques. Results the main corrosion products of Halogenite alloy C-276 in bromine solution were Ni Br2Fe Br2Mo Br2Br3 and so on. The corrosion rate increased with the increase of temperature, water content, bromine content and rotational speed. Temperature, water, liquid bromine and rotational speed all play an important role in the occurrence of corrosion. The corrosion type is mainly comprehensive corrosion, accompanied by intergranular corrosion. Conclusion under the condition of bromine gel mixed solution corrosion, the corrosion rate of Hass alloy C-276 can be increased obviously by increasing the temperature, bromine content, water content and rotational speed of C-276 alloy, and the corrosion rate of C-276 alloy can be increased obviously by increasing the temperature, bromine content, water content and rotational speed of C-276 alloy. Halide alloy C-276 cannot be used as the main material of bromine rubber mixer in the production equipment of butyl bromide rubber.
【作者单位】：中国石油大学(华东);华北油田公司储气库管理处;
【分类号】：TG172

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